metag: copy_thread(): rename 'arg' argument to 'kthread_arg'

The 'arg' argument to copy_thread() is only ever used when forking a new
kernel thread. Hence, rename it to 'kthread_arg' for clarity.

Signed-off-by: Alex Dowad <alexinbeijing@gmail.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>

diff --git a/arch/metag/kernel/process.c b/arch/metag/kernel/process.c
index 483dff986a23ebdb9e4b762dbf84254e1e715041..7f546183a0f026385354abb547235d8f397255ac 100644 (file)
--- a/arch/metag/kernel/process.c
+++ b/arch/metag/kernel/process.c
@@ -174,8 +174,11 @@ void show_regs(struct pt_regs *regs)
        show_trace(NULL, (unsigned long *)regs->ctx.AX[0].U0, regs);
 }
 
+/*
+ * Copy architecture-specific thread state
+ */
 int copy_thread(unsigned long clone_flags, unsigned long usp,
-               unsigned long arg, struct task_struct *tsk)
+               unsigned long kthread_arg, struct task_struct *tsk)
 {
        struct pt_regs *childregs = task_pt_regs(tsk);
        void *kernel_context = ((void *) childregs +
@@ -202,12 +205,13 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
                global_base = __core_reg_get(A1GbP);
                childregs->ctx.AX[0].U1 = (unsigned long) global_base;
                childregs->ctx.AX[0].U0 = (unsigned long) kernel_context;
-               /* Set D1Ar1=arg and D1RtP=usp (fn) */
+               /* Set D1Ar1=kthread_arg and D1RtP=usp (fn) */
                childregs->ctx.DX[4].U1 = usp;
-               childregs->ctx.DX[3].U1 = arg;
+               childregs->ctx.DX[3].U1 = kthread_arg;
                tsk->thread.int_depth = 2;
                return 0;
        }
+
        /*
         * Get a pointer to where the new child's register block should have
         * been pushed.